TABLE 2.
Description of participants according to existing missing data on laboratory diagnosis of pertussis infection
| Characteristic | Value for group
|
P value | |
|---|---|---|---|
| Missing-data group | Laboratory complete-data group | ||
| Total participants | 148 | 218 | |
| Clinical symptoms present, % (no.) | 72.3 (107) | 60.1 (131) | 0.03 |
| Sex distribution, % (no.) | 0.02 | ||
| Men | 52.0 (77) | 39.0 (85) | |
| Women | 48.0 (71) | 61.0 (133) | |
| Age (median), yrs | 15.5 | 27.0 | |
| Age (2 classes), % (no.) | 0.0001 | ||
| Adults, ≥18 yrs | 48.0 (71) | 69.3 (151) | |
| Children, <18 yrs | 52.0 (77) | 30.7 (67) | |
| Age (4 classes), % (no.) | 0.00001 | ||
| <10 yrs | 41.2 (61) | 14.2 (31) | |
| ≥10 yrs-<18 yrs | 10.8 (16) | 16.5 (36) | |
| ≥18 yrs-<50 yrs | 42.6 (63) | 60.1 (131) | |
| ≥50 yrs | 5.4 (8) | 9.2 (20) | |
| Continent, % (no.) | 0.89 | ||
| North America | 67.6 (100) | 68.8 (150) | |
| Europe | 32.4 (48) | 31.2 (68) | |